ΔE 14.2, fair: the same colour family, but not a straight swap. Solar Flare is a little lighter, warmer than Trollslayer Orange.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Solar Flare is a little lighter, warmer than Trollslayer Orange.
The same difference applies the other way round: Trollslayer Orange is a little darker, cooler.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Trollslayer Orange on the colour wheel See Solar Flare on the colour wheel
All matches: Trollslayer Orange equivalents · Solar Flare equivalents